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Date Published: 15/06/2022
Online Published: 26/02/2020
Abstract Views: 595
Views PDF: 298
DOI: https://doi.org/10.55046/vjrnm.37.148.2020
Issue
No. 37 (2020)
Section
Scientific research
How to Cite
Vo, P. T., Phan, C. C., Tran, Q. T., Trinh, M. T., Bui, T. S. H., Tran, Q. V., Huynh, L. P., Vo, M. T., & Vo, T. D. (2020). The role of 3D TOF MRA in evaluation of intracranial dural arteriovenous fistulasn. Vietnamese Journal of Radiology and Nuclear Medicine, 37, 22-31. https://doi.org/10.55046/vjrnm.37.148.2020

The role of 3D TOF MRA in evaluation of intracranial dural arteriovenous fistulasn

Dr Vo Phuong Truc1, Dr Phan Cong Chien1, Dr Trần Quốc Tuấn1, Dr Trịnh Minh Tùng1, Dr Bui Thi Song Hanh1, Dr Tran Quang Vinh2, Dr Huynh Le Phuong1, Dr Vo Minh Tuan1, BS Võ Tấn Đức1
1 Ho Chi Minh City University of Medicine and Pharmacy Hospital
2 Cho Ray Hospital

Main Article Content

Abstract

Objective: We evaluate the role of 3D TOF MRA in diagnosis of the fistula location and cortical venous drainage of intracranial dural
arteriovenous fistula (DAVF) in comparison with Digital Subtraction Angiography
Subjects and methods: Prospective study between 1/2015 and 4/2019, 93 patients (35 male, 58 female), aged from 11 to 88 (mean 55),
diagnosed of DAVF on conventional MRI with 3D TOF MRA and then underwent DSA for confirming the diagnosis. In three cases, 3D TOF
MRA field of view is not enough to evaluate the fistula site but enough to evaluate the present of abnormal hyperintensity in cortical veins.
Results: In our study, source images from 3D TOF MRA showed high sensitivity and positive predictive values (up to 100%, 97,6%
respectively) in diagnosis of DAVF (n=90) and detected cortical venous drainage (n=93) with high specificity and high positive predictive value
(100%). Cohen's Kappa coefficient showed very good agreement between 3D TOF MRA and DSA in detecting the location of DAVF. In 4 falsepositive cases, 1 case showed high-intensity area in the transverse-sigmoid venous sinous on 3D TOF MRA due to thrombosis and 3 other cases showed high-intensity area in the cavernous sinus causing misdiagnosis of DAVF.
Conclusion: The use of 3D TOF MRA source images is valuable in diagnosing the location of fistulas and cortical venous drainage in
intracranial DAVF. False-positive cases in this study suggested that MRA with contrast could ameliorate the limitation of 3D TOF MRA.

Article Details

Keywords

DAVF, dural arteriovenous fistula, cortical venous reflux, cortical venous drainage, 3D TOF MRA, DSA, false-positive

References

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